# Addition Zombi vs E

The clearest difference is update cadence: Addition Zombi at every 3 days against E's every 16 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Addition Zombi ships an update every 3 days, E every 16 months. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Addition Zombi | E |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 3 days** | Every 16 months |
| Monetization | Ad-supported | — |
| Size | 46 MB | 223 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 12+ |
| Developer | [Kazuyoshi Izumi](https://appshunter.io/developer/1013586610) | [Full Fat Productions Ltd](https://appshunter.io/developer/374306144) |

## What reviewers say

### Addition Zombi

[App page](https://appshunter.io/ios/app/addition-zombi/id1182853896)

An educational game where players solve addition problems to help a cat cross a path. Incorrect answers trigger zombie appearances, encouraging quick thinking and accuracy. Aim for high scores through combos and climb the leaderboards.

**Highlights:** Addition practice, Interactive gameplay, Score combos, Leaderboard rankings, Zombie theme

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### E

[App page](https://appshunter.io/ios/app/e-merge-ency-services/id1659857983)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Addition Zombi free?

Addition Zombi is free to download, with no in-app purchases.

### Is E free?

E is free to download, with no in-app purchases.

### Do Addition Zombi or E have ads?

Both Addition Zombi and E show ads.

### Which is updated more often, Addition Zombi or E?

Addition Zombi ships an update every 3 days, and E every 16 months. Most recently, Addition Zombi was updated on October 24, 2026 and E on October 27, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*